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CONFIGURING THE FXO CHANNELS
Configuring the FXO channels on the GXW – 410x is an easy process. Follow the GUI interfaces. The
Device Status page terms are defined in Table 9: FXO Lines Configuration Definitions. An example
of the Channel Dialing Configuration is shown in Figure 6. Please note the default is always configured.
The user has the option to change the default settings as described in the Table 9.
T
ABLE 9: FXO LINES CONFIGURATION DEFINITIONS
Enable Current
Disconnect
When set to Y, Current Disconnect is enabled. Certain PSTN Cos require this to be
enabled, in order to realize disconnect signal from PSTN side. Default is Y.
If enabled use threshold : Default is 100ms. Range is 50ms to 800ms.
Certain PSTN service providers have a threshold time within which the line stabilizes
after off-hook. It is entirely dependent on provider, however if you experience PSTN
line detection issues, please modify this setting appropriately in 100ms increments.
Enable Tone
Disconnect
Default is No. If PSTN provider uses call progress tones then it should be set to Yes in
order to realize disconnect tone. Please configure accurate Call Progress Tones on
Channels webpage based on PSTN provider (or traditional PBX) settings.
Enable Polarity
Reversal
Default is No. This should be set to Yes only if the FXO lines are subscribed to PR
service from PSTN Service provider. It is merely a PR detect feature.
***Note:- If there is no PR service from provider on the FXO line, and this setting is
configured to Yes, calls will not be successful.
AC Termination
Impedance
Selects the impedance of the analog Line connected to the FXO port on the GXW-
410x.
Silence Timeout
Terminate call after long silence detected. Default is 60 seconds, max 65536.
Syntax for Channel Specific Settings:
Default - ch1-8:X; {all channels 1 to 8 are set to value X}
Additional Examples:-
ch1,3-6:10;ch2,7-8:12 {channels 1,3,4,5 and 6 are set to value 10 while channels 2,7
and 8 are set to value 12.
DTMF Digit
Length
Default value is 100ms.
DTMF Digit
Volume
Default value is -11dB.
DTMF Dial Pause
Default value is 100ms.
Wait for Dial-tone
Default is Y (Yes). When set to Yes, the gateway will wait till it hears dialtone from
FXO line before dialing out the destination digits.
Grandstream Networks, Inc. GXW-410x User Manual Page 19 of 37
Firmware 1.0.0.53 Updated: 04/2007